./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/recHanoi03-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi03-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 887ada769b510ae5d273618525924110908f2b5f .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 02:36:48,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 02:36:48,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 02:36:48,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 02:36:48,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 02:36:48,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 02:36:48,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 02:36:48,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 02:36:48,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 02:36:48,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 02:36:48,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 02:36:48,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 02:36:48,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 02:36:48,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 02:36:48,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 02:36:48,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 02:36:48,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 02:36:48,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 02:36:48,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 02:36:48,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 02:36:48,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 02:36:48,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 02:36:48,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 02:36:48,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 02:36:48,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 02:36:48,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 02:36:48,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 02:36:48,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 02:36:48,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 02:36:48,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 02:36:48,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 02:36:48,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 02:36:48,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 02:36:48,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 02:36:48,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 02:36:48,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 02:36:48,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 02:36:48,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 02:36:48,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 02:36:48,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 02:36:48,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 02:36:48,871 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-11-20 02:36:48,895 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 02:36:48,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 02:36:48,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 02:36:48,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 02:36:48,907 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 02:36:48,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 02:36:48,907 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 02:36:48,907 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 02:36:48,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 02:36:48,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 02:36:48,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 02:36:48,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 02:36:48,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 02:36:48,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 02:36:48,909 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-20 02:36:48,909 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 02:36:48,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 02:36:48,911 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 02:36:48,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 02:36:48,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 02:36:48,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 02:36:48,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 02:36:48,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 02:36:48,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 02:36:48,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 02:36:48,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 02:36:48,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 02:36:48,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 02:36:48,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 02:36:48,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 02:36:48,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 887ada769b510ae5d273618525924110908f2b5f [2019-11-20 02:36:49,087 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 02:36:49,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 02:36:49,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 02:36:49,109 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 02:36:49,110 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 02:36:49,111 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/../../sv-benchmarks/c/recursive/recHanoi03-2.c [2019-11-20 02:36:49,174 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/data/56d65ada9/1d53518b2bf44b029eca6102565ff2af/FLAG05908aab4 [2019-11-20 02:36:49,550 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 02:36:49,551 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/sv-benchmarks/c/recursive/recHanoi03-2.c [2019-11-20 02:36:49,556 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/data/56d65ada9/1d53518b2bf44b029eca6102565ff2af/FLAG05908aab4 [2019-11-20 02:36:49,987 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/data/56d65ada9/1d53518b2bf44b029eca6102565ff2af [2019-11-20 02:36:49,989 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 02:36:49,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 02:36:49,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 02:36:49,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 02:36:49,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 02:36:49,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:36:49" (1/1) ... [2019-11-20 02:36:49,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd64ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:36:49, skipping insertion in model container [2019-11-20 02:36:50,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:36:49" (1/1) ... [2019-11-20 02:36:50,011 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 02:36:50,029 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 02:36:50,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:36:50,161 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 02:36:50,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:36:50,247 INFO L192 MainTranslator]: Completed translation [2019-11-20 02:36:50,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:36:50 WrapperNode [2019-11-20 02:36:50,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 02:36:50,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 02:36:50,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 02:36:50,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 02:36:50,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:36:50" (1/1) ... [2019-11-20 02:36:50,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:36:50" (1/1) ... [2019-11-20 02:36:50,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 02:36:50,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 02:36:50,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 02:36:50,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 02:36:50,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:36:50" (1/1) ... [2019-11-20 02:36:50,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:36:50" (1/1) ... [2019-11-20 02:36:50,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:36:50" (1/1) ... [2019-11-20 02:36:50,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:36:50" (1/1) ... [2019-11-20 02:36:50,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:36:50" (1/1) ... [2019-11-20 02:36:50,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:36:50" (1/1) ... [2019-11-20 02:36:50,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:36:50" (1/1) ... [2019-11-20 02:36:50,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 02:36:50,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 02:36:50,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 02:36:50,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 02:36:50,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:36:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 02:36:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2019-11-20 02:36:50,354 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2019-11-20 02:36:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 02:36:50,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 02:36:50,511 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 02:36:50,511 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 02:36:50,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:36:50 BoogieIcfgContainer [2019-11-20 02:36:50,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 02:36:50,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 02:36:50,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 02:36:50,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 02:36:50,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:36:49" (1/3) ... [2019-11-20 02:36:50,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53efd5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:36:50, skipping insertion in model container [2019-11-20 02:36:50,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:36:50" (2/3) ... [2019-11-20 02:36:50,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53efd5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:36:50, skipping insertion in model container [2019-11-20 02:36:50,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:36:50" (3/3) ... [2019-11-20 02:36:50,519 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2019-11-20 02:36:50,543 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 02:36:50,549 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-20 02:36:50,558 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-20 02:36:50,592 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 02:36:50,593 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 02:36:50,593 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 02:36:50,593 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 02:36:50,593 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 02:36:50,593 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 02:36:50,593 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 02:36:50,594 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 02:36:50,610 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-20 02:36:50,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-20 02:36:50,615 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:50,616 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-20 02:36:50,617 INFO L410 AbstractCegarLoop]: === Iteration 1 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:50,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:50,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1513948958, now seen corresponding path program 1 times [2019-11-20 02:36:50,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:50,631 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313798669] [2019-11-20 02:36:50,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:36:50,777 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313798669] [2019-11-20 02:36:50,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:36:50,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 02:36:50,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787310817] [2019-11-20 02:36:50,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 02:36:50,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:50,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 02:36:50,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:36:50,799 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2019-11-20 02:36:50,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:50,905 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-11-20 02:36:50,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 02:36:50,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-20 02:36:50,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:50,914 INFO L225 Difference]: With dead ends: 33 [2019-11-20 02:36:50,914 INFO L226 Difference]: Without dead ends: 20 [2019-11-20 02:36:50,917 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 02:36:50,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-20 02:36:50,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-20 02:36:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-20 02:36:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-11-20 02:36:50,948 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2019-11-20 02:36:50,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:50,949 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-11-20 02:36:50,949 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 02:36:50,949 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-11-20 02:36:50,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 02:36:50,950 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:50,950 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:36:50,950 INFO L410 AbstractCegarLoop]: === Iteration 2 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:50,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:50,950 INFO L82 PathProgramCache]: Analyzing trace with hash -312222520, now seen corresponding path program 1 times [2019-11-20 02:36:50,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:50,951 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012053283] [2019-11-20 02:36:50,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:50,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:36:50,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012053283] [2019-11-20 02:36:50,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:36:50,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 02:36:50,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989627379] [2019-11-20 02:36:51,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 02:36:51,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:51,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 02:36:51,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 02:36:51,001 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2019-11-20 02:36:51,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:51,072 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2019-11-20 02:36:51,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 02:36:51,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-20 02:36:51,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:51,075 INFO L225 Difference]: With dead ends: 39 [2019-11-20 02:36:51,075 INFO L226 Difference]: Without dead ends: 36 [2019-11-20 02:36:51,076 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-20 02:36:51,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-20 02:36:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2019-11-20 02:36:51,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 02:36:51,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-20 02:36:51,085 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 7 [2019-11-20 02:36:51,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:51,086 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-20 02:36:51,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 02:36:51,086 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-20 02:36:51,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 02:36:51,087 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:51,088 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-20 02:36:51,088 INFO L410 AbstractCegarLoop]: === Iteration 3 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:51,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:51,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1144431293, now seen corresponding path program 1 times [2019-11-20 02:36:51,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:51,089 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533939061] [2019-11-20 02:36:51,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:36:51,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533939061] [2019-11-20 02:36:51,157 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055688227] [2019-11-20 02:36:51,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:51,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 02:36:51,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:36:51,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:36:51,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-20 02:36:51,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964673645] [2019-11-20 02:36:51,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 02:36:51,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:51,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 02:36:51,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-20 02:36:51,218 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 7 states. [2019-11-20 02:36:51,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:51,348 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2019-11-20 02:36:51,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 02:36:51,351 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-11-20 02:36:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:51,352 INFO L225 Difference]: With dead ends: 55 [2019-11-20 02:36:51,352 INFO L226 Difference]: Without dead ends: 54 [2019-11-20 02:36:51,353 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-11-20 02:36:51,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-20 02:36:51,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2019-11-20 02:36:51,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-20 02:36:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2019-11-20 02:36:51,367 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 12 [2019-11-20 02:36:51,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:51,367 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2019-11-20 02:36:51,367 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 02:36:51,368 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2019-11-20 02:36:51,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 02:36:51,368 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:51,369 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:36:51,580 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:51,580 INFO L410 AbstractCegarLoop]: === Iteration 4 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:51,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:51,581 INFO L82 PathProgramCache]: Analyzing trace with hash -287349001, now seen corresponding path program 1 times [2019-11-20 02:36:51,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:51,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259373579] [2019-11-20 02:36:51,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:51,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 02:36:51,648 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259373579] [2019-11-20 02:36:51,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:36:51,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 02:36:51,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664175148] [2019-11-20 02:36:51,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 02:36:51,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:51,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 02:36:51,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 02:36:51,650 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand 4 states. [2019-11-20 02:36:51,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:51,693 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2019-11-20 02:36:51,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 02:36:51,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-20 02:36:51,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:51,697 INFO L225 Difference]: With dead ends: 63 [2019-11-20 02:36:51,697 INFO L226 Difference]: Without dead ends: 61 [2019-11-20 02:36:51,698 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 02:36:51,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-20 02:36:51,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2019-11-20 02:36:51,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-20 02:36:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2019-11-20 02:36:51,711 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 14 [2019-11-20 02:36:51,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:51,712 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2019-11-20 02:36:51,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 02:36:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2019-11-20 02:36:51,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-20 02:36:51,712 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:51,713 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:36:51,713 INFO L410 AbstractCegarLoop]: === Iteration 5 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:51,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:51,713 INFO L82 PathProgramCache]: Analyzing trace with hash -317884395, now seen corresponding path program 1 times [2019-11-20 02:36:51,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:51,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026029065] [2019-11-20 02:36:51,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 02:36:51,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026029065] [2019-11-20 02:36:51,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:36:51,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 02:36:51,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415044073] [2019-11-20 02:36:51,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 02:36:51,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:51,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 02:36:51,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 02:36:51,769 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 4 states. [2019-11-20 02:36:51,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:51,795 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2019-11-20 02:36:51,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 02:36:51,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-20 02:36:51,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:51,796 INFO L225 Difference]: With dead ends: 63 [2019-11-20 02:36:51,796 INFO L226 Difference]: Without dead ends: 54 [2019-11-20 02:36:51,797 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 02:36:51,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-20 02:36:51,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-11-20 02:36:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-20 02:36:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2019-11-20 02:36:51,806 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 15 [2019-11-20 02:36:51,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:51,806 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2019-11-20 02:36:51,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 02:36:51,806 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2019-11-20 02:36:51,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 02:36:51,807 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:51,807 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1] [2019-11-20 02:36:51,807 INFO L410 AbstractCegarLoop]: === Iteration 6 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:51,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:51,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1656222120, now seen corresponding path program 2 times [2019-11-20 02:36:51,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:51,808 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431977969] [2019-11-20 02:36:51,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:36:51,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431977969] [2019-11-20 02:36:51,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888215071] [2019-11-20 02:36:51,892 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:51,930 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 02:36:51,931 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:36:51,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 02:36:51,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:36:51,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:36:51,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-20 02:36:51,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494748730] [2019-11-20 02:36:51,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 02:36:51,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:51,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 02:36:51,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-20 02:36:51,954 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 9 states. [2019-11-20 02:36:52,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:52,082 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2019-11-20 02:36:52,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 02:36:52,083 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2019-11-20 02:36:52,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:52,084 INFO L225 Difference]: With dead ends: 86 [2019-11-20 02:36:52,084 INFO L226 Difference]: Without dead ends: 85 [2019-11-20 02:36:52,084 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-20 02:36:52,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-11-20 02:36:52,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2019-11-20 02:36:52,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-11-20 02:36:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2019-11-20 02:36:52,095 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 17 [2019-11-20 02:36:52,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:52,096 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2019-11-20 02:36:52,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 02:36:52,096 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2019-11-20 02:36:52,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 02:36:52,097 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:52,097 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1] [2019-11-20 02:36:52,301 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:52,301 INFO L410 AbstractCegarLoop]: === Iteration 7 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:52,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:52,302 INFO L82 PathProgramCache]: Analyzing trace with hash 438260835, now seen corresponding path program 3 times [2019-11-20 02:36:52,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:52,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820306420] [2019-11-20 02:36:52,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:36:52,430 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820306420] [2019-11-20 02:36:52,430 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311285199] [2019-11-20 02:36:52,430 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:52,474 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-20 02:36:52,474 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:36:52,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 02:36:52,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:36:52,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:36:52,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-20 02:36:52,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636172013] [2019-11-20 02:36:52,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 02:36:52,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:52,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 02:36:52,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-20 02:36:52,495 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand 11 states. [2019-11-20 02:36:52,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:52,715 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2019-11-20 02:36:52,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-20 02:36:52,715 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2019-11-20 02:36:52,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:52,717 INFO L225 Difference]: With dead ends: 109 [2019-11-20 02:36:52,717 INFO L226 Difference]: Without dead ends: 108 [2019-11-20 02:36:52,718 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2019-11-20 02:36:52,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-11-20 02:36:52,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 92. [2019-11-20 02:36:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-20 02:36:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 112 transitions. [2019-11-20 02:36:52,733 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 112 transitions. Word has length 22 [2019-11-20 02:36:52,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:52,734 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 112 transitions. [2019-11-20 02:36:52,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 02:36:52,734 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 112 transitions. [2019-11-20 02:36:52,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 02:36:52,735 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:52,736 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2019-11-20 02:36:52,941 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:52,942 INFO L410 AbstractCegarLoop]: === Iteration 8 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:52,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:52,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1696558728, now seen corresponding path program 4 times [2019-11-20 02:36:52,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:52,943 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574395995] [2019-11-20 02:36:52,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:36:53,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574395995] [2019-11-20 02:36:53,128 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230739718] [2019-11-20 02:36:53,129 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:53,168 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 02:36:53,168 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:36:53,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 02:36:53,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:36:53,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:36:53,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-20 02:36:53,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537520150] [2019-11-20 02:36:53,183 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 02:36:53,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:53,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 02:36:53,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-20 02:36:53,184 INFO L87 Difference]: Start difference. First operand 92 states and 112 transitions. Second operand 13 states. [2019-11-20 02:36:53,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:53,424 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2019-11-20 02:36:53,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-20 02:36:53,425 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2019-11-20 02:36:53,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:53,426 INFO L225 Difference]: With dead ends: 132 [2019-11-20 02:36:53,426 INFO L226 Difference]: Without dead ends: 131 [2019-11-20 02:36:53,427 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2019-11-20 02:36:53,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-11-20 02:36:53,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 111. [2019-11-20 02:36:53,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-11-20 02:36:53,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 136 transitions. [2019-11-20 02:36:53,437 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 136 transitions. Word has length 27 [2019-11-20 02:36:53,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:53,437 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 136 transitions. [2019-11-20 02:36:53,437 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 02:36:53,437 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 136 transitions. [2019-11-20 02:36:53,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-20 02:36:53,438 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:53,439 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:36:53,645 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:53,645 INFO L410 AbstractCegarLoop]: === Iteration 9 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:53,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:53,646 INFO L82 PathProgramCache]: Analyzing trace with hash -563967927, now seen corresponding path program 1 times [2019-11-20 02:36:53,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:53,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238472284] [2019-11-20 02:36:53,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 02:36:53,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238472284] [2019-11-20 02:36:53,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166186894] [2019-11-20 02:36:53,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:53,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 02:36:53,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 02:36:53,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:36:53,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-20 02:36:53,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499939465] [2019-11-20 02:36:53,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 02:36:53,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:53,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 02:36:53,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-20 02:36:53,827 INFO L87 Difference]: Start difference. First operand 111 states and 136 transitions. Second operand 8 states. [2019-11-20 02:36:53,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:53,872 INFO L93 Difference]: Finished difference Result 153 states and 200 transitions. [2019-11-20 02:36:53,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 02:36:53,873 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2019-11-20 02:36:53,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:53,874 INFO L225 Difference]: With dead ends: 153 [2019-11-20 02:36:53,874 INFO L226 Difference]: Without dead ends: 151 [2019-11-20 02:36:53,875 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-20 02:36:53,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-11-20 02:36:53,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 145. [2019-11-20 02:36:53,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-11-20 02:36:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 177 transitions. [2019-11-20 02:36:53,889 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 177 transitions. Word has length 26 [2019-11-20 02:36:53,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:53,889 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 177 transitions. [2019-11-20 02:36:53,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 02:36:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 177 transitions. [2019-11-20 02:36:53,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 02:36:53,890 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:53,891 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:36:54,096 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:54,097 INFO L410 AbstractCegarLoop]: === Iteration 10 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:54,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:54,097 INFO L82 PathProgramCache]: Analyzing trace with hash -303136509, now seen corresponding path program 1 times [2019-11-20 02:36:54,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:54,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138484219] [2019-11-20 02:36:54,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:54,182 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 02:36:54,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138484219] [2019-11-20 02:36:54,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706222963] [2019-11-20 02:36:54,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:54,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 02:36:54,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 02:36:54,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 02:36:54,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2019-11-20 02:36:54,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420555418] [2019-11-20 02:36:54,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 02:36:54,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:54,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 02:36:54,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-20 02:36:54,249 INFO L87 Difference]: Start difference. First operand 145 states and 177 transitions. Second operand 6 states. [2019-11-20 02:36:54,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:54,282 INFO L93 Difference]: Finished difference Result 145 states and 177 transitions. [2019-11-20 02:36:54,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 02:36:54,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2019-11-20 02:36:54,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:54,284 INFO L225 Difference]: With dead ends: 145 [2019-11-20 02:36:54,284 INFO L226 Difference]: Without dead ends: 129 [2019-11-20 02:36:54,285 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-20 02:36:54,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-11-20 02:36:54,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2019-11-20 02:36:54,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-11-20 02:36:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2019-11-20 02:36:54,307 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 27 [2019-11-20 02:36:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:54,307 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2019-11-20 02:36:54,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 02:36:54,308 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2019-11-20 02:36:54,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 02:36:54,311 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:54,311 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1] [2019-11-20 02:36:54,514 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:54,517 INFO L410 AbstractCegarLoop]: === Iteration 11 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:54,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:54,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1757224061, now seen corresponding path program 5 times [2019-11-20 02:36:54,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:54,518 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443065581] [2019-11-20 02:36:54,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:54,669 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:36:54,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443065581] [2019-11-20 02:36:54,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174622864] [2019-11-20 02:36:54,669 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:54,722 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-20 02:36:54,722 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:36:54,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 02:36:54,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:36:54,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:36:54,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-20 02:36:54,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962695912] [2019-11-20 02:36:54,735 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-20 02:36:54,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:54,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-20 02:36:54,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2019-11-20 02:36:54,736 INFO L87 Difference]: Start difference. First operand 129 states and 144 transitions. Second operand 15 states. [2019-11-20 02:36:54,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:54,954 INFO L93 Difference]: Finished difference Result 167 states and 173 transitions. [2019-11-20 02:36:54,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-20 02:36:54,956 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2019-11-20 02:36:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:54,957 INFO L225 Difference]: With dead ends: 167 [2019-11-20 02:36:54,957 INFO L226 Difference]: Without dead ends: 166 [2019-11-20 02:36:54,958 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2019-11-20 02:36:54,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-11-20 02:36:54,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2019-11-20 02:36:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-11-20 02:36:54,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 172 transitions. [2019-11-20 02:36:54,966 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 172 transitions. Word has length 32 [2019-11-20 02:36:54,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:54,967 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 172 transitions. [2019-11-20 02:36:54,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-20 02:36:54,967 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 172 transitions. [2019-11-20 02:36:54,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-20 02:36:54,968 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:54,968 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1] [2019-11-20 02:36:55,171 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:55,172 INFO L410 AbstractCegarLoop]: === Iteration 12 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:55,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:55,172 INFO L82 PathProgramCache]: Analyzing trace with hash -512208024, now seen corresponding path program 6 times [2019-11-20 02:36:55,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:55,172 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699489583] [2019-11-20 02:36:55,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:36:55,375 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699489583] [2019-11-20 02:36:55,375 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222141108] [2019-11-20 02:36:55,375 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:55,400 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-20 02:36:55,400 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:36:55,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-20 02:36:55,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-20 02:36:55,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:36:55,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 17 [2019-11-20 02:36:55,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070293029] [2019-11-20 02:36:55,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 02:36:55,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:55,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 02:36:55,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2019-11-20 02:36:55,450 INFO L87 Difference]: Start difference. First operand 154 states and 172 transitions. Second operand 18 states. [2019-11-20 02:36:55,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:55,512 INFO L93 Difference]: Finished difference Result 154 states and 172 transitions. [2019-11-20 02:36:55,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 02:36:55,514 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 37 [2019-11-20 02:36:55,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:55,516 INFO L225 Difference]: With dead ends: 154 [2019-11-20 02:36:55,516 INFO L226 Difference]: Without dead ends: 153 [2019-11-20 02:36:55,516 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2019-11-20 02:36:55,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-11-20 02:36:55,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2019-11-20 02:36:55,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-11-20 02:36:55,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 171 transitions. [2019-11-20 02:36:55,532 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 171 transitions. Word has length 37 [2019-11-20 02:36:55,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:55,532 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 171 transitions. [2019-11-20 02:36:55,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 02:36:55,533 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 171 transitions. [2019-11-20 02:36:55,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-20 02:36:55,537 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:55,538 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-20 02:36:55,740 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:55,749 INFO L410 AbstractCegarLoop]: === Iteration 13 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:55,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:55,749 INFO L82 PathProgramCache]: Analyzing trace with hash 867149367, now seen corresponding path program 2 times [2019-11-20 02:36:55,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:55,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176099475] [2019-11-20 02:36:55,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-20 02:36:55,865 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176099475] [2019-11-20 02:36:55,865 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797956793] [2019-11-20 02:36:55,866 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:55,898 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 02:36:55,898 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:36:55,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 02:36:55,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:55,935 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-20 02:36:55,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:36:55,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-11-20 02:36:55,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369890452] [2019-11-20 02:36:55,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 02:36:55,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:55,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 02:36:55,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-20 02:36:55,936 INFO L87 Difference]: Start difference. First operand 153 states and 171 transitions. Second operand 10 states. [2019-11-20 02:36:55,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:55,969 INFO L93 Difference]: Finished difference Result 207 states and 237 transitions. [2019-11-20 02:36:55,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 02:36:55,970 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-11-20 02:36:55,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:55,971 INFO L225 Difference]: With dead ends: 207 [2019-11-20 02:36:55,971 INFO L226 Difference]: Without dead ends: 185 [2019-11-20 02:36:55,972 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-20 02:36:55,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2019-11-20 02:36:55,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 179. [2019-11-20 02:36:55,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2019-11-20 02:36:55,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 197 transitions. [2019-11-20 02:36:55,981 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 197 transitions. Word has length 38 [2019-11-20 02:36:55,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:55,982 INFO L462 AbstractCegarLoop]: Abstraction has 179 states and 197 transitions. [2019-11-20 02:36:55,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 02:36:55,982 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 197 transitions. [2019-11-20 02:36:55,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-20 02:36:55,983 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:55,983 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2019-11-20 02:36:56,189 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:56,190 INFO L410 AbstractCegarLoop]: === Iteration 14 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:56,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:56,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1066180599, now seen corresponding path program 3 times [2019-11-20 02:36:56,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:56,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533386134] [2019-11-20 02:36:56,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-20 02:36:56,316 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533386134] [2019-11-20 02:36:56,316 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51467904] [2019-11-20 02:36:56,316 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:56,350 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-20 02:36:56,350 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:36:56,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 02:36:56,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-20 02:36:56,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:36:56,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-11-20 02:36:56,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580830116] [2019-11-20 02:36:56,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-20 02:36:56,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:56,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 02:36:56,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-20 02:36:56,409 INFO L87 Difference]: Start difference. First operand 179 states and 197 transitions. Second operand 12 states. [2019-11-20 02:36:56,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:56,466 INFO L93 Difference]: Finished difference Result 233 states and 263 transitions. [2019-11-20 02:36:56,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 02:36:56,467 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2019-11-20 02:36:56,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:56,468 INFO L225 Difference]: With dead ends: 233 [2019-11-20 02:36:56,468 INFO L226 Difference]: Without dead ends: 204 [2019-11-20 02:36:56,469 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-20 02:36:56,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-11-20 02:36:56,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 198. [2019-11-20 02:36:56,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2019-11-20 02:36:56,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 216 transitions. [2019-11-20 02:36:56,478 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 216 transitions. Word has length 50 [2019-11-20 02:36:56,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:56,478 INFO L462 AbstractCegarLoop]: Abstraction has 198 states and 216 transitions. [2019-11-20 02:36:56,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-20 02:36:56,479 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 216 transitions. [2019-11-20 02:36:56,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-11-20 02:36:56,484 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:56,484 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2019-11-20 02:36:56,696 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:56,696 INFO L410 AbstractCegarLoop]: === Iteration 15 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:56,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:56,696 INFO L82 PathProgramCache]: Analyzing trace with hash -158018185, now seen corresponding path program 4 times [2019-11-20 02:36:56,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:56,702 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219379644] [2019-11-20 02:36:56,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:56,898 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-20 02:36:56,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219379644] [2019-11-20 02:36:56,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159569683] [2019-11-20 02:36:56,900 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:56,946 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 02:36:56,946 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:36:56,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 02:36:56,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:57,022 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-20 02:36:57,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:36:57,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-11-20 02:36:57,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614406878] [2019-11-20 02:36:57,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 02:36:57,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:57,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 02:36:57,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2019-11-20 02:36:57,024 INFO L87 Difference]: Start difference. First operand 198 states and 216 transitions. Second operand 14 states. [2019-11-20 02:36:57,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:57,086 INFO L93 Difference]: Finished difference Result 252 states and 282 transitions. [2019-11-20 02:36:57,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 02:36:57,086 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2019-11-20 02:36:57,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:57,088 INFO L225 Difference]: With dead ends: 252 [2019-11-20 02:36:57,088 INFO L226 Difference]: Without dead ends: 216 [2019-11-20 02:36:57,089 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2019-11-20 02:36:57,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2019-11-20 02:36:57,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 210. [2019-11-20 02:36:57,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2019-11-20 02:36:57,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 228 transitions. [2019-11-20 02:36:57,099 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 228 transitions. Word has length 62 [2019-11-20 02:36:57,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:57,100 INFO L462 AbstractCegarLoop]: Abstraction has 210 states and 228 transitions. [2019-11-20 02:36:57,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 02:36:57,100 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 228 transitions. [2019-11-20 02:36:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-11-20 02:36:57,101 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:57,101 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2019-11-20 02:36:57,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:57,313 INFO L410 AbstractCegarLoop]: === Iteration 16 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:57,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:57,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1955313719, now seen corresponding path program 5 times [2019-11-20 02:36:57,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:57,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825941908] [2019-11-20 02:36:57,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-11-20 02:36:57,535 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825941908] [2019-11-20 02:36:57,535 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491238707] [2019-11-20 02:36:57,535 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:57,580 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-11-20 02:36:57,580 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:36:57,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 02:36:57,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-11-20 02:36:57,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:36:57,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-11-20 02:36:57,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772998737] [2019-11-20 02:36:57,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 02:36:57,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:57,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 02:36:57,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-11-20 02:36:57,689 INFO L87 Difference]: Start difference. First operand 210 states and 228 transitions. Second operand 16 states. [2019-11-20 02:36:57,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:57,775 INFO L93 Difference]: Finished difference Result 264 states and 294 transitions. [2019-11-20 02:36:57,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-20 02:36:57,775 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 74 [2019-11-20 02:36:57,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:57,777 INFO L225 Difference]: With dead ends: 264 [2019-11-20 02:36:57,777 INFO L226 Difference]: Without dead ends: 223 [2019-11-20 02:36:57,778 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 79 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-11-20 02:36:57,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2019-11-20 02:36:57,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 217. [2019-11-20 02:36:57,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2019-11-20 02:36:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 235 transitions. [2019-11-20 02:36:57,791 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 235 transitions. Word has length 74 [2019-11-20 02:36:57,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:57,792 INFO L462 AbstractCegarLoop]: Abstraction has 217 states and 235 transitions. [2019-11-20 02:36:57,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 02:36:57,792 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 235 transitions. [2019-11-20 02:36:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-11-20 02:36:57,794 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:57,794 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2019-11-20 02:36:57,997 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:57,997 INFO L410 AbstractCegarLoop]: === Iteration 17 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:57,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:57,998 INFO L82 PathProgramCache]: Analyzing trace with hash -330632009, now seen corresponding path program 6 times [2019-11-20 02:36:57,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:57,998 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097406054] [2019-11-20 02:36:57,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:58,277 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-11-20 02:36:58,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097406054] [2019-11-20 02:36:58,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507597370] [2019-11-20 02:36:58,278 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:58,317 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-11-20 02:36:58,318 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:36:58,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-20 02:36:58,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-11-20 02:36:58,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:36:58,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-11-20 02:36:58,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438518324] [2019-11-20 02:36:58,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-20 02:36:58,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:58,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-20 02:36:58,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2019-11-20 02:36:58,433 INFO L87 Difference]: Start difference. First operand 217 states and 235 transitions. Second operand 18 states. [2019-11-20 02:36:58,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:58,508 INFO L93 Difference]: Finished difference Result 271 states and 301 transitions. [2019-11-20 02:36:58,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-20 02:36:58,509 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 86 [2019-11-20 02:36:58,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:58,510 INFO L225 Difference]: With dead ends: 271 [2019-11-20 02:36:58,510 INFO L226 Difference]: Without dead ends: 230 [2019-11-20 02:36:58,511 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 92 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2019-11-20 02:36:58,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2019-11-20 02:36:58,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2019-11-20 02:36:58,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2019-11-20 02:36:58,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 242 transitions. [2019-11-20 02:36:58,521 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 242 transitions. Word has length 86 [2019-11-20 02:36:58,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:58,521 INFO L462 AbstractCegarLoop]: Abstraction has 224 states and 242 transitions. [2019-11-20 02:36:58,521 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-20 02:36:58,522 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 242 transitions. [2019-11-20 02:36:58,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-20 02:36:58,523 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:58,523 INFO L410 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2019-11-20 02:36:58,726 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:58,726 INFO L410 AbstractCegarLoop]: === Iteration 18 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:58,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:58,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1775681655, now seen corresponding path program 7 times [2019-11-20 02:36:58,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:58,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690360348] [2019-11-20 02:36:58,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:59,039 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-11-20 02:36:59,039 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690360348] [2019-11-20 02:36:59,039 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790061210] [2019-11-20 02:36:59,039 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:59,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-20 02:36:59,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:36:59,213 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-11-20 02:36:59,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:36:59,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-11-20 02:36:59,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046325003] [2019-11-20 02:36:59,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-20 02:36:59,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:36:59,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-20 02:36:59,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2019-11-20 02:36:59,218 INFO L87 Difference]: Start difference. First operand 224 states and 242 transitions. Second operand 20 states. [2019-11-20 02:36:59,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:36:59,301 INFO L93 Difference]: Finished difference Result 278 states and 308 transitions. [2019-11-20 02:36:59,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 02:36:59,301 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 98 [2019-11-20 02:36:59,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:36:59,303 INFO L225 Difference]: With dead ends: 278 [2019-11-20 02:36:59,303 INFO L226 Difference]: Without dead ends: 237 [2019-11-20 02:36:59,304 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 105 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2019-11-20 02:36:59,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2019-11-20 02:36:59,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 231. [2019-11-20 02:36:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2019-11-20 02:36:59,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 249 transitions. [2019-11-20 02:36:59,313 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 249 transitions. Word has length 98 [2019-11-20 02:36:59,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:36:59,313 INFO L462 AbstractCegarLoop]: Abstraction has 231 states and 249 transitions. [2019-11-20 02:36:59,313 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-20 02:36:59,314 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 249 transitions. [2019-11-20 02:36:59,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-20 02:36:59,315 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:36:59,316 INFO L410 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1] [2019-11-20 02:36:59,518 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:59,519 INFO L410 AbstractCegarLoop]: === Iteration 19 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:36:59,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:36:59,519 INFO L82 PathProgramCache]: Analyzing trace with hash 73375164, now seen corresponding path program 8 times [2019-11-20 02:36:59,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:36:59,519 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394590117] [2019-11-20 02:36:59,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:36:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:36:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2019-11-20 02:36:59,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394590117] [2019-11-20 02:36:59,907 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046405588] [2019-11-20 02:36:59,907 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:36:59,972 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 02:36:59,973 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:36:59,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-20 02:36:59,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2019-11-20 02:37:00,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:37:00,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-11-20 02:37:00,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684009118] [2019-11-20 02:37:00,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-20 02:37:00,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:37:00,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-20 02:37:00,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2019-11-20 02:37:00,128 INFO L87 Difference]: Start difference. First operand 231 states and 249 transitions. Second operand 22 states. [2019-11-20 02:37:00,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:37:00,240 INFO L93 Difference]: Finished difference Result 285 states and 315 transitions. [2019-11-20 02:37:00,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-20 02:37:00,241 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 145 [2019-11-20 02:37:00,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:37:00,243 INFO L225 Difference]: With dead ends: 285 [2019-11-20 02:37:00,243 INFO L226 Difference]: Without dead ends: 244 [2019-11-20 02:37:00,244 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 153 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2019-11-20 02:37:00,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2019-11-20 02:37:00,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 238. [2019-11-20 02:37:00,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-11-20 02:37:00,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 256 transitions. [2019-11-20 02:37:00,253 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 256 transitions. Word has length 145 [2019-11-20 02:37:00,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:37:00,254 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 256 transitions. [2019-11-20 02:37:00,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-20 02:37:00,254 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 256 transitions. [2019-11-20 02:37:00,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-11-20 02:37:00,258 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:37:00,258 INFO L410 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1] [2019-11-20 02:37:00,462 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:00,462 INFO L410 AbstractCegarLoop]: === Iteration 20 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:37:00,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:00,462 INFO L82 PathProgramCache]: Analyzing trace with hash -329358962, now seen corresponding path program 9 times [2019-11-20 02:37:00,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:00,463 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209086622] [2019-11-20 02:37:00,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2019-11-20 02:37:00,911 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209086622] [2019-11-20 02:37:00,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060992742] [2019-11-20 02:37:00,912 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:00,975 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-20 02:37:00,975 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:37:00,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-20 02:37:00,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:01,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2019-11-20 02:37:01,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:37:01,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-11-20 02:37:01,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40820690] [2019-11-20 02:37:01,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-20 02:37:01,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:37:01,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-20 02:37:01,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2019-11-20 02:37:01,149 INFO L87 Difference]: Start difference. First operand 238 states and 256 transitions. Second operand 24 states. [2019-11-20 02:37:01,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:37:01,249 INFO L93 Difference]: Finished difference Result 292 states and 322 transitions. [2019-11-20 02:37:01,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-20 02:37:01,249 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 157 [2019-11-20 02:37:01,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:37:01,251 INFO L225 Difference]: With dead ends: 292 [2019-11-20 02:37:01,251 INFO L226 Difference]: Without dead ends: 251 [2019-11-20 02:37:01,252 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 166 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2019-11-20 02:37:01,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2019-11-20 02:37:01,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 245. [2019-11-20 02:37:01,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2019-11-20 02:37:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 263 transitions. [2019-11-20 02:37:01,261 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 263 transitions. Word has length 157 [2019-11-20 02:37:01,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:37:01,262 INFO L462 AbstractCegarLoop]: Abstraction has 245 states and 263 transitions. [2019-11-20 02:37:01,262 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-20 02:37:01,262 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 263 transitions. [2019-11-20 02:37:01,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-11-20 02:37:01,264 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:37:01,264 INFO L410 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2019-11-20 02:37:01,468 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:01,468 INFO L410 AbstractCegarLoop]: === Iteration 21 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:37:01,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:01,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1310449148, now seen corresponding path program 10 times [2019-11-20 02:37:01,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:01,468 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77102089] [2019-11-20 02:37:01,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:02,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2019-11-20 02:37:02,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77102089] [2019-11-20 02:37:02,012 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729652742] [2019-11-20 02:37:02,012 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:02,073 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 02:37:02,073 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:37:02,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-20 02:37:02,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2019-11-20 02:37:02,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:37:02,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-11-20 02:37:02,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876767003] [2019-11-20 02:37:02,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-20 02:37:02,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:37:02,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-20 02:37:02,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2019-11-20 02:37:02,290 INFO L87 Difference]: Start difference. First operand 245 states and 263 transitions. Second operand 26 states. [2019-11-20 02:37:02,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:37:02,411 INFO L93 Difference]: Finished difference Result 299 states and 329 transitions. [2019-11-20 02:37:02,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-20 02:37:02,411 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 169 [2019-11-20 02:37:02,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:37:02,413 INFO L225 Difference]: With dead ends: 299 [2019-11-20 02:37:02,413 INFO L226 Difference]: Without dead ends: 258 [2019-11-20 02:37:02,414 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 179 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2019-11-20 02:37:02,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2019-11-20 02:37:02,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 252. [2019-11-20 02:37:02,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2019-11-20 02:37:02,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 270 transitions. [2019-11-20 02:37:02,433 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 270 transitions. Word has length 169 [2019-11-20 02:37:02,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:37:02,434 INFO L462 AbstractCegarLoop]: Abstraction has 252 states and 270 transitions. [2019-11-20 02:37:02,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-20 02:37:02,434 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 270 transitions. [2019-11-20 02:37:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-20 02:37:02,438 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:37:02,438 INFO L410 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1] [2019-11-20 02:37:02,649 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:02,649 INFO L410 AbstractCegarLoop]: === Iteration 22 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:37:02,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:02,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1656708873, now seen corresponding path program 11 times [2019-11-20 02:37:02,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:02,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081199918] [2019-11-20 02:37:02,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2019-11-20 02:37:03,251 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081199918] [2019-11-20 02:37:03,252 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134847801] [2019-11-20 02:37:03,252 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:03,317 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-11-20 02:37:03,318 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:37:03,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-20 02:37:03,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2019-11-20 02:37:03,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:37:03,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-11-20 02:37:03,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704036717] [2019-11-20 02:37:03,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-20 02:37:03,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:37:03,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-20 02:37:03,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2019-11-20 02:37:03,571 INFO L87 Difference]: Start difference. First operand 252 states and 270 transitions. Second operand 28 states. [2019-11-20 02:37:03,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:37:03,707 INFO L93 Difference]: Finished difference Result 306 states and 336 transitions. [2019-11-20 02:37:03,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-20 02:37:03,709 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 146 [2019-11-20 02:37:03,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:37:03,711 INFO L225 Difference]: With dead ends: 306 [2019-11-20 02:37:03,711 INFO L226 Difference]: Without dead ends: 265 [2019-11-20 02:37:03,712 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 157 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2019-11-20 02:37:03,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2019-11-20 02:37:03,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2019-11-20 02:37:03,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2019-11-20 02:37:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 277 transitions. [2019-11-20 02:37:03,723 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 277 transitions. Word has length 146 [2019-11-20 02:37:03,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:37:03,724 INFO L462 AbstractCegarLoop]: Abstraction has 259 states and 277 transitions. [2019-11-20 02:37:03,724 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-20 02:37:03,724 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 277 transitions. [2019-11-20 02:37:03,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-11-20 02:37:03,727 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:37:03,728 INFO L410 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1] [2019-11-20 02:37:03,931 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:03,932 INFO L410 AbstractCegarLoop]: === Iteration 23 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:37:03,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:03,932 INFO L82 PathProgramCache]: Analyzing trace with hash -2039869892, now seen corresponding path program 12 times [2019-11-20 02:37:03,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:03,932 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004136998] [2019-11-20 02:37:03,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2019-11-20 02:37:04,688 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004136998] [2019-11-20 02:37:04,689 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712400511] [2019-11-20 02:37:04,689 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:04,778 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2019-11-20 02:37:04,778 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:37:04,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-20 02:37:04,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:05,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2019-11-20 02:37:05,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:37:05,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-11-20 02:37:05,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100516230] [2019-11-20 02:37:05,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-11-20 02:37:05,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:37:05,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-11-20 02:37:05,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2019-11-20 02:37:05,068 INFO L87 Difference]: Start difference. First operand 259 states and 277 transitions. Second operand 30 states. [2019-11-20 02:37:05,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:37:05,198 INFO L93 Difference]: Finished difference Result 313 states and 343 transitions. [2019-11-20 02:37:05,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-20 02:37:05,199 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 193 [2019-11-20 02:37:05,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:37:05,201 INFO L225 Difference]: With dead ends: 313 [2019-11-20 02:37:05,201 INFO L226 Difference]: Without dead ends: 272 [2019-11-20 02:37:05,201 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 205 SyntacticMatches, 12 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2019-11-20 02:37:05,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2019-11-20 02:37:05,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 266. [2019-11-20 02:37:05,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2019-11-20 02:37:05,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 284 transitions. [2019-11-20 02:37:05,214 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 284 transitions. Word has length 193 [2019-11-20 02:37:05,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:37:05,215 INFO L462 AbstractCegarLoop]: Abstraction has 266 states and 284 transitions. [2019-11-20 02:37:05,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-11-20 02:37:05,215 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 284 transitions. [2019-11-20 02:37:05,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-11-20 02:37:05,219 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:37:05,219 INFO L410 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1] [2019-11-20 02:37:05,425 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:05,426 INFO L410 AbstractCegarLoop]: === Iteration 24 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:37:05,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:05,426 INFO L82 PathProgramCache]: Analyzing trace with hash 350954254, now seen corresponding path program 13 times [2019-11-20 02:37:05,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:05,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73666262] [2019-11-20 02:37:05,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:06,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1690 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2019-11-20 02:37:06,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73666262] [2019-11-20 02:37:06,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276979275] [2019-11-20 02:37:06,211 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:06,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-20 02:37:06,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1690 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2019-11-20 02:37:06,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:37:06,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-11-20 02:37:06,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127815497] [2019-11-20 02:37:06,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-11-20 02:37:06,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:37:06,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-11-20 02:37:06,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2019-11-20 02:37:06,560 INFO L87 Difference]: Start difference. First operand 266 states and 284 transitions. Second operand 32 states. [2019-11-20 02:37:06,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:37:06,686 INFO L93 Difference]: Finished difference Result 320 states and 350 transitions. [2019-11-20 02:37:06,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-11-20 02:37:06,686 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 205 [2019-11-20 02:37:06,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:37:06,688 INFO L225 Difference]: With dead ends: 320 [2019-11-20 02:37:06,688 INFO L226 Difference]: Without dead ends: 279 [2019-11-20 02:37:06,689 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 218 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2019-11-20 02:37:06,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2019-11-20 02:37:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 273. [2019-11-20 02:37:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2019-11-20 02:37:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 291 transitions. [2019-11-20 02:37:06,701 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 291 transitions. Word has length 205 [2019-11-20 02:37:06,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:37:06,701 INFO L462 AbstractCegarLoop]: Abstraction has 273 states and 291 transitions. [2019-11-20 02:37:06,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-11-20 02:37:06,702 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 291 transitions. [2019-11-20 02:37:06,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-11-20 02:37:06,704 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:37:06,704 INFO L410 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1] [2019-11-20 02:37:06,908 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:06,908 INFO L410 AbstractCegarLoop]: === Iteration 25 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:37:06,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:06,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1929171383, now seen corresponding path program 14 times [2019-11-20 02:37:06,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:06,909 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497396290] [2019-11-20 02:37:06,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:07,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2019-11-20 02:37:07,887 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497396290] [2019-11-20 02:37:07,887 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678933299] [2019-11-20 02:37:07,887 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:07,944 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 02:37:07,944 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:37:07,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-20 02:37:07,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:08,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2019-11-20 02:37:08,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:37:08,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-11-20 02:37:08,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515352734] [2019-11-20 02:37:08,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-20 02:37:08,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:37:08,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-20 02:37:08,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2019-11-20 02:37:08,312 INFO L87 Difference]: Start difference. First operand 273 states and 291 transitions. Second operand 34 states. [2019-11-20 02:37:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:37:08,464 INFO L93 Difference]: Finished difference Result 327 states and 357 transitions. [2019-11-20 02:37:08,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-20 02:37:08,465 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 182 [2019-11-20 02:37:08,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:37:08,467 INFO L225 Difference]: With dead ends: 327 [2019-11-20 02:37:08,467 INFO L226 Difference]: Without dead ends: 286 [2019-11-20 02:37:08,468 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 196 SyntacticMatches, 14 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2019-11-20 02:37:08,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2019-11-20 02:37:08,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2019-11-20 02:37:08,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2019-11-20 02:37:08,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 298 transitions. [2019-11-20 02:37:08,480 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 298 transitions. Word has length 182 [2019-11-20 02:37:08,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:37:08,480 INFO L462 AbstractCegarLoop]: Abstraction has 280 states and 298 transitions. [2019-11-20 02:37:08,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-20 02:37:08,481 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 298 transitions. [2019-11-20 02:37:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-11-20 02:37:08,484 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:37:08,484 INFO L410 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2019-11-20 02:37:08,687 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:08,687 INFO L410 AbstractCegarLoop]: === Iteration 26 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:37:08,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:08,688 INFO L82 PathProgramCache]: Analyzing trace with hash 537467854, now seen corresponding path program 15 times [2019-11-20 02:37:08,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:08,688 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026149284] [2019-11-20 02:37:08,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2019-11-20 02:37:09,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026149284] [2019-11-20 02:37:09,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801804291] [2019-11-20 02:37:09,730 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:09,805 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-20 02:37:09,805 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:37:09,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-20 02:37:09,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2019-11-20 02:37:10,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:37:10,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-11-20 02:37:10,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067617796] [2019-11-20 02:37:10,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-11-20 02:37:10,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:37:10,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-11-20 02:37:10,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2019-11-20 02:37:10,215 INFO L87 Difference]: Start difference. First operand 280 states and 298 transitions. Second operand 36 states. [2019-11-20 02:37:10,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:37:10,348 INFO L93 Difference]: Finished difference Result 334 states and 364 transitions. [2019-11-20 02:37:10,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-11-20 02:37:10,348 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 229 [2019-11-20 02:37:10,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:37:10,350 INFO L225 Difference]: With dead ends: 334 [2019-11-20 02:37:10,350 INFO L226 Difference]: Without dead ends: 293 [2019-11-20 02:37:10,351 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 244 SyntacticMatches, 15 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2019-11-20 02:37:10,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2019-11-20 02:37:10,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 287. [2019-11-20 02:37:10,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2019-11-20 02:37:10,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 305 transitions. [2019-11-20 02:37:10,359 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 305 transitions. Word has length 229 [2019-11-20 02:37:10,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:37:10,360 INFO L462 AbstractCegarLoop]: Abstraction has 287 states and 305 transitions. [2019-11-20 02:37:10,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-11-20 02:37:10,360 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 305 transitions. [2019-11-20 02:37:10,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-11-20 02:37:10,363 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:37:10,363 INFO L410 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1] [2019-11-20 02:37:10,567 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:10,567 INFO L410 AbstractCegarLoop]: === Iteration 27 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:37:10,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:10,567 INFO L82 PathProgramCache]: Analyzing trace with hash 315334903, now seen corresponding path program 16 times [2019-11-20 02:37:10,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:10,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294688135] [2019-11-20 02:37:10,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:11,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2019-11-20 02:37:11,613 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294688135] [2019-11-20 02:37:11,613 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075934911] [2019-11-20 02:37:11,613 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:11,664 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 02:37:11,664 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:37:11,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-20 02:37:11,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:12,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2019-11-20 02:37:12,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:37:12,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2019-11-20 02:37:12,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547304485] [2019-11-20 02:37:12,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-11-20 02:37:12,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:37:12,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-11-20 02:37:12,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2019-11-20 02:37:12,018 INFO L87 Difference]: Start difference. First operand 287 states and 305 transitions. Second operand 38 states. [2019-11-20 02:37:12,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:37:12,146 INFO L93 Difference]: Finished difference Result 341 states and 371 transitions. [2019-11-20 02:37:12,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-11-20 02:37:12,146 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 206 [2019-11-20 02:37:12,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:37:12,148 INFO L225 Difference]: With dead ends: 341 [2019-11-20 02:37:12,148 INFO L226 Difference]: Without dead ends: 300 [2019-11-20 02:37:12,149 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 222 SyntacticMatches, 16 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2019-11-20 02:37:12,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2019-11-20 02:37:12,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 294. [2019-11-20 02:37:12,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-11-20 02:37:12,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 312 transitions. [2019-11-20 02:37:12,158 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 312 transitions. Word has length 206 [2019-11-20 02:37:12,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:37:12,158 INFO L462 AbstractCegarLoop]: Abstraction has 294 states and 312 transitions. [2019-11-20 02:37:12,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-11-20 02:37:12,159 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 312 transitions. [2019-11-20 02:37:12,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2019-11-20 02:37:12,162 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:37:12,162 INFO L410 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1] [2019-11-20 02:37:12,365 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:12,365 INFO L410 AbstractCegarLoop]: === Iteration 28 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:37:12,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:12,366 INFO L82 PathProgramCache]: Analyzing trace with hash -843307890, now seen corresponding path program 17 times [2019-11-20 02:37:12,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:12,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595170323] [2019-11-20 02:37:12,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2019-11-20 02:37:13,660 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595170323] [2019-11-20 02:37:13,660 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568760151] [2019-11-20 02:37:13,660 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:13,738 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2019-11-20 02:37:13,738 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:37:13,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 37 conjunts are in the unsatisfiable core [2019-11-20 02:37:13,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2019-11-20 02:37:14,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:37:14,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-11-20 02:37:14,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346338509] [2019-11-20 02:37:14,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-11-20 02:37:14,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:37:14,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-11-20 02:37:14,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2019-11-20 02:37:14,235 INFO L87 Difference]: Start difference. First operand 294 states and 312 transitions. Second operand 40 states. [2019-11-20 02:37:14,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:37:14,400 INFO L93 Difference]: Finished difference Result 348 states and 378 transitions. [2019-11-20 02:37:14,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-11-20 02:37:14,400 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 253 [2019-11-20 02:37:14,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:37:14,402 INFO L225 Difference]: With dead ends: 348 [2019-11-20 02:37:14,402 INFO L226 Difference]: Without dead ends: 307 [2019-11-20 02:37:14,403 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 270 SyntacticMatches, 17 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2019-11-20 02:37:14,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2019-11-20 02:37:14,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 301. [2019-11-20 02:37:14,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2019-11-20 02:37:14,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 319 transitions. [2019-11-20 02:37:14,411 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 319 transitions. Word has length 253 [2019-11-20 02:37:14,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:37:14,412 INFO L462 AbstractCegarLoop]: Abstraction has 301 states and 319 transitions. [2019-11-20 02:37:14,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-11-20 02:37:14,412 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 319 transitions. [2019-11-20 02:37:14,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-11-20 02:37:14,415 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:37:14,416 INFO L410 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1] [2019-11-20 02:37:14,619 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:14,619 INFO L410 AbstractCegarLoop]: === Iteration 29 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:37:14,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:14,619 INFO L82 PathProgramCache]: Analyzing trace with hash 349397047, now seen corresponding path program 18 times [2019-11-20 02:37:14,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:14,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89592408] [2019-11-20 02:37:14,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2036 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2019-11-20 02:37:16,086 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89592408] [2019-11-20 02:37:16,086 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677532618] [2019-11-20 02:37:16,086 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:16,172 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2019-11-20 02:37:16,173 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:37:16,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 39 conjunts are in the unsatisfiable core [2019-11-20 02:37:16,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:16,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2036 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2019-11-20 02:37:16,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:37:16,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-11-20 02:37:16,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243980185] [2019-11-20 02:37:16,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-11-20 02:37:16,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:37:16,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-11-20 02:37:16,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2019-11-20 02:37:16,716 INFO L87 Difference]: Start difference. First operand 301 states and 319 transitions. Second operand 42 states. [2019-11-20 02:37:16,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:37:16,951 INFO L93 Difference]: Finished difference Result 355 states and 385 transitions. [2019-11-20 02:37:16,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-11-20 02:37:16,951 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 230 [2019-11-20 02:37:16,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:37:16,953 INFO L225 Difference]: With dead ends: 355 [2019-11-20 02:37:16,953 INFO L226 Difference]: Without dead ends: 314 [2019-11-20 02:37:16,954 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 248 SyntacticMatches, 18 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2019-11-20 02:37:16,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2019-11-20 02:37:16,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 308. [2019-11-20 02:37:16,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2019-11-20 02:37:16,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 326 transitions. [2019-11-20 02:37:16,970 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 326 transitions. Word has length 230 [2019-11-20 02:37:16,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:37:16,971 INFO L462 AbstractCegarLoop]: Abstraction has 308 states and 326 transitions. [2019-11-20 02:37:16,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-11-20 02:37:16,971 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 326 transitions. [2019-11-20 02:37:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-11-20 02:37:16,973 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:37:16,973 INFO L410 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1] [2019-11-20 02:37:17,176 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:17,177 INFO L410 AbstractCegarLoop]: === Iteration 30 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:37:17,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:17,177 INFO L82 PathProgramCache]: Analyzing trace with hash 420240905, now seen corresponding path program 19 times [2019-11-20 02:37:17,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:17,177 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277199211] [2019-11-20 02:37:17,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:18,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2263 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2019-11-20 02:37:18,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277199211] [2019-11-20 02:37:18,685 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269045903] [2019-11-20 02:37:18,685 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:18,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 41 conjunts are in the unsatisfiable core [2019-11-20 02:37:18,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2263 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2019-11-20 02:37:19,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:37:19,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2019-11-20 02:37:19,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657891728] [2019-11-20 02:37:19,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-11-20 02:37:19,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:37:19,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-11-20 02:37:19,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2019-11-20 02:37:19,244 INFO L87 Difference]: Start difference. First operand 308 states and 326 transitions. Second operand 44 states. [2019-11-20 02:37:19,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:37:19,415 INFO L93 Difference]: Finished difference Result 362 states and 392 transitions. [2019-11-20 02:37:19,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-11-20 02:37:19,415 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 242 [2019-11-20 02:37:19,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:37:19,417 INFO L225 Difference]: With dead ends: 362 [2019-11-20 02:37:19,417 INFO L226 Difference]: Without dead ends: 321 [2019-11-20 02:37:19,418 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 261 SyntacticMatches, 19 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2019-11-20 02:37:19,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2019-11-20 02:37:19,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 315. [2019-11-20 02:37:19,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2019-11-20 02:37:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 333 transitions. [2019-11-20 02:37:19,427 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 333 transitions. Word has length 242 [2019-11-20 02:37:19,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:37:19,427 INFO L462 AbstractCegarLoop]: Abstraction has 315 states and 333 transitions. [2019-11-20 02:37:19,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-11-20 02:37:19,428 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 333 transitions. [2019-11-20 02:37:19,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2019-11-20 02:37:19,430 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:37:19,430 INFO L410 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1] [2019-11-20 02:37:19,633 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:19,633 INFO L410 AbstractCegarLoop]: === Iteration 31 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:37:19,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:19,633 INFO L82 PathProgramCache]: Analyzing trace with hash -2063192260, now seen corresponding path program 20 times [2019-11-20 02:37:19,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:19,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626547104] [2019-11-20 02:37:19,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:21,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2019-11-20 02:37:21,125 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626547104] [2019-11-20 02:37:21,126 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576542820] [2019-11-20 02:37:21,126 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:21,190 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 02:37:21,190 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:37:21,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 43 conjunts are in the unsatisfiable core [2019-11-20 02:37:21,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:21,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2019-11-20 02:37:21,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:37:21,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2019-11-20 02:37:21,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265443960] [2019-11-20 02:37:21,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 46 states [2019-11-20 02:37:21,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:37:21,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2019-11-20 02:37:21,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2019-11-20 02:37:21,924 INFO L87 Difference]: Start difference. First operand 315 states and 333 transitions. Second operand 46 states. [2019-11-20 02:37:22,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:37:22,097 INFO L93 Difference]: Finished difference Result 369 states and 399 transitions. [2019-11-20 02:37:22,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-11-20 02:37:22,097 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 289 [2019-11-20 02:37:22,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:37:22,099 INFO L225 Difference]: With dead ends: 369 [2019-11-20 02:37:22,099 INFO L226 Difference]: Without dead ends: 328 [2019-11-20 02:37:22,101 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 309 SyntacticMatches, 20 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2019-11-20 02:37:22,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2019-11-20 02:37:22,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 322. [2019-11-20 02:37:22,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2019-11-20 02:37:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 340 transitions. [2019-11-20 02:37:22,109 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 340 transitions. Word has length 289 [2019-11-20 02:37:22,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:37:22,109 INFO L462 AbstractCegarLoop]: Abstraction has 322 states and 340 transitions. [2019-11-20 02:37:22,109 INFO L463 AbstractCegarLoop]: Interpolant automaton has 46 states. [2019-11-20 02:37:22,109 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 340 transitions. [2019-11-20 02:37:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2019-11-20 02:37:22,112 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:37:22,112 INFO L410 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1] [2019-11-20 02:37:22,316 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:22,317 INFO L410 AbstractCegarLoop]: === Iteration 32 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:37:22,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:22,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1626433038, now seen corresponding path program 21 times [2019-11-20 02:37:22,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:22,317 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745903528] [2019-11-20 02:37:22,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:24,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3642 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2019-11-20 02:37:24,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745903528] [2019-11-20 02:37:24,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903838086] [2019-11-20 02:37:24,054 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:24,129 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2019-11-20 02:37:24,129 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:37:24,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-20 02:37:24,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3642 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2019-11-20 02:37:24,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:37:24,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2019-11-20 02:37:24,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906797713] [2019-11-20 02:37:24,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-11-20 02:37:24,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:37:24,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-11-20 02:37:24,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2019-11-20 02:37:24,676 INFO L87 Difference]: Start difference. First operand 322 states and 340 transitions. Second operand 48 states. [2019-11-20 02:37:24,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:37:24,912 INFO L93 Difference]: Finished difference Result 376 states and 406 transitions. [2019-11-20 02:37:24,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-11-20 02:37:24,913 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 301 [2019-11-20 02:37:24,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:37:24,914 INFO L225 Difference]: With dead ends: 376 [2019-11-20 02:37:24,915 INFO L226 Difference]: Without dead ends: 335 [2019-11-20 02:37:24,916 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 322 SyntacticMatches, 21 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2019-11-20 02:37:24,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2019-11-20 02:37:24,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 329. [2019-11-20 02:37:24,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2019-11-20 02:37:24,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 347 transitions. [2019-11-20 02:37:24,931 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 347 transitions. Word has length 301 [2019-11-20 02:37:24,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:37:24,931 INFO L462 AbstractCegarLoop]: Abstraction has 329 states and 347 transitions. [2019-11-20 02:37:24,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-11-20 02:37:24,931 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 347 transitions. [2019-11-20 02:37:24,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2019-11-20 02:37:24,934 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:37:24,934 INFO L410 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1] [2019-11-20 02:37:25,137 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:25,138 INFO L410 AbstractCegarLoop]: === Iteration 33 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:37:25,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:25,138 INFO L82 PathProgramCache]: Analyzing trace with hash 338825084, now seen corresponding path program 22 times [2019-11-20 02:37:25,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:25,138 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936265833] [2019-11-20 02:37:25,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2019-11-20 02:37:27,004 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936265833] [2019-11-20 02:37:27,004 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173808199] [2019-11-20 02:37:27,004 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:27,074 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 02:37:27,074 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:37:27,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 47 conjunts are in the unsatisfiable core [2019-11-20 02:37:27,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:27,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2019-11-20 02:37:27,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:37:27,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2019-11-20 02:37:27,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759931903] [2019-11-20 02:37:27,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-11-20 02:37:27,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:37:27,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-11-20 02:37:27,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2019-11-20 02:37:27,690 INFO L87 Difference]: Start difference. First operand 329 states and 347 transitions. Second operand 50 states. [2019-11-20 02:37:27,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:37:27,902 INFO L93 Difference]: Finished difference Result 383 states and 413 transitions. [2019-11-20 02:37:27,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-11-20 02:37:27,902 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 313 [2019-11-20 02:37:27,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:37:27,904 INFO L225 Difference]: With dead ends: 383 [2019-11-20 02:37:27,905 INFO L226 Difference]: Without dead ends: 342 [2019-11-20 02:37:27,906 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 335 SyntacticMatches, 22 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2019-11-20 02:37:27,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2019-11-20 02:37:27,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 336. [2019-11-20 02:37:27,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2019-11-20 02:37:27,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 354 transitions. [2019-11-20 02:37:27,917 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 354 transitions. Word has length 313 [2019-11-20 02:37:27,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:37:27,918 INFO L462 AbstractCegarLoop]: Abstraction has 336 states and 354 transitions. [2019-11-20 02:37:27,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 50 states. [2019-11-20 02:37:27,918 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 354 transitions. [2019-11-20 02:37:27,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2019-11-20 02:37:27,921 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:37:27,921 INFO L410 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1] [2019-11-20 02:37:28,125 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:28,125 INFO L410 AbstractCegarLoop]: === Iteration 34 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:37:28,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:28,125 INFO L82 PathProgramCache]: Analyzing trace with hash 117652873, now seen corresponding path program 23 times [2019-11-20 02:37:28,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:28,126 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509918360] [2019-11-20 02:37:28,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2019-11-20 02:37:30,038 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509918360] [2019-11-20 02:37:30,038 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245530568] [2019-11-20 02:37:30,038 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:30,121 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2019-11-20 02:37:30,121 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:37:30,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 49 conjunts are in the unsatisfiable core [2019-11-20 02:37:30,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2019-11-20 02:37:30,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 02:37:30,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2019-11-20 02:37:30,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875686254] [2019-11-20 02:37:30,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-11-20 02:37:30,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:37:30,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-11-20 02:37:30,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2019-11-20 02:37:30,724 INFO L87 Difference]: Start difference. First operand 336 states and 354 transitions. Second operand 52 states. [2019-11-20 02:37:30,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:37:30,921 INFO L93 Difference]: Finished difference Result 390 states and 420 transitions. [2019-11-20 02:37:30,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-11-20 02:37:30,921 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 290 [2019-11-20 02:37:30,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:37:30,923 INFO L225 Difference]: With dead ends: 390 [2019-11-20 02:37:30,923 INFO L226 Difference]: Without dead ends: 349 [2019-11-20 02:37:30,924 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 313 SyntacticMatches, 23 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2019-11-20 02:37:30,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2019-11-20 02:37:30,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 343. [2019-11-20 02:37:30,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-11-20 02:37:30,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 361 transitions. [2019-11-20 02:37:30,932 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 361 transitions. Word has length 290 [2019-11-20 02:37:30,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:37:30,932 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 361 transitions. [2019-11-20 02:37:30,932 INFO L463 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-11-20 02:37:30,933 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 361 transitions. [2019-11-20 02:37:30,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2019-11-20 02:37:30,935 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:37:30,936 INFO L410 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1] [2019-11-20 02:37:31,139 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:31,139 INFO L410 AbstractCegarLoop]: === Iteration 35 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-20 02:37:31,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:37:31,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1252532292, now seen corresponding path program 24 times [2019-11-20 02:37:31,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:37:31,140 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133481972] [2019-11-20 02:37:31,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:37:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:37:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4572 backedges. 2072 proven. 1072 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2019-11-20 02:37:33,578 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133481972] [2019-11-20 02:37:33,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102271351] [2019-11-20 02:37:33,579 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aec57977-cbef-4eee-83cb-641f784a55d5/bin/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:37:33,682 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2019-11-20 02:37:33,682 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 02:37:33,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 51 conjunts are in the unsatisfiable core [2019-11-20 02:37:33,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 02:37:45,923 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 25 [2019-11-20 02:38:16,392 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-11-20 02:38:18,475 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-20 02:38:20,585 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= |c_hanoi_#t~ret0| |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-20 02:38:22,888 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-20 02:38:25,179 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= |c_hanoi_#t~ret0| |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-20 02:38:27,270 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-20 02:38:29,481 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= |c_hanoi_#t~ret0| |v_hanoi_#res_BEFORE_RETURN_309|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-20 02:38:37,206 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_309|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-20 02:38:39,571 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_310| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= |c_hanoi_#t~ret0| |v_hanoi_#res_BEFORE_RETURN_310|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_310| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_309|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-20 02:38:41,914 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_hanoi_#res_BEFORE_RETURN_306| Int) (|v_hanoi_#res_BEFORE_RETURN_305| Int) (|v_hanoi_#res_BEFORE_RETURN_308| Int) (|v_hanoi_#res_BEFORE_RETURN_307| Int) (|v_hanoi_#res_BEFORE_RETURN_309| Int) (|v_hanoi_#res_BEFORE_RETURN_310| Int) (|v_hanoi_#res_BEFORE_RETURN_304| Int) (|v_hanoi_#res_BEFORE_RETURN_303| Int)) (and (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_310| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_309|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_308| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_307|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_306| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_305|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_305| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_304|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_303| (- 1)) 1) (- 2)) 1) (<= (div (+ (- |c_hanoi_#res|) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_310|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_304| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_303|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_309| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_308|) (<= (div (+ (* |v_hanoi_#res_BEFORE_RETURN_307| (- 1)) 1) (- 2)) |v_hanoi_#res_BEFORE_RETURN_306|))) is different from true [2019-11-20 02:38:55,293 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-11-20 02:38:55,294 FATAL L310 FreeRefinementEngine]: Exception during interpolant generation: SMTLIBException [2019-11-20 02:38:55,495 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:38:55,495 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:140) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:851) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:576) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 42 more [2019-11-20 02:38:55,499 INFO L168 Benchmark]: Toolchain (without parser) took 125508.50 ms. Allocated memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: 1.2 GB). Free memory was 951.5 MB in the beginning and 1.3 GB in the end (delta: -334.3 MB). Peak memory consumption was 914.5 MB. Max. memory is 11.5 GB. [2019-11-20 02:38:55,499 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:38:55,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -195.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-20 02:38:55,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:38:55,500 INFO L168 Benchmark]: Boogie Preprocessor took 16.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-11-20 02:38:55,500 INFO L168 Benchmark]: RCFGBuilder took 219.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2019-11-20 02:38:55,501 INFO L168 Benchmark]: TraceAbstraction took 124984.82 ms. Allocated memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: 1.1 GB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -163.1 MB). Peak memory consumption was 931.6 MB. Max. memory is 11.5 GB. [2019-11-20 02:38:55,503 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 256.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -195.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 219.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 124984.82 ms. Allocated memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: 1.1 GB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -163.1 MB). Peak memory consumption was 931.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...